Nipple for wire spokes



NW 59 M9- E. w. STOLER mam NIPPLE FOR WIRE SPOKESI Filed May 26, 1928 2 Sheets-Sheet. 1

IN V EN TQR.

A TTORNEY.

NIPPLE FQR WIRE' SPOKES 7 Filed May 26, 1928 2 Sheetg-Sheet 2 Avg/ ak.

A TTORNE Y.

Patented Nov. 5, 1929 mrao stares EDWARD W. STOLER, OE MANSFIELD, OHIO NIPPLE FOR WIRE SPOKES Application filed May 28, 1928. Serial No. 280,777.

The objects of the invention are top vide an improved nipple adapted for use with either end of a wire spoke, and a mechanical process of constructing the same from a solid cylindrical metal blank by cold forging between punching dies. In this nipple the slot in the head is dispensed with, and a projection adjacent to the laterally extended seating portion is formed with angular edges. which may be square or hexagonal, so that the nipple can be engaged b means of an ordinary wrench of any suita le character.

The nipple is constructed with the wrench holdfortightening the same, acent to the bearing seat or head end, and is reversibly attachable to-thehub end or rim end ofthe spoke, and is adapted for use in hubs where the nipples of adjoining spokes are so closely 1 brought together that it would not be possible to employ the old method of construc'- tion in which the wrench holds are upon an elongated skirt portion, at the inner end of the nipple, projecting from the body of the nipple.

Other features of importance, making the nipple more efiicient and practical in use, may be enumerated as follows:

The length of the nipple at the head permits a wrench hold upon the head when it is used with a drop base rim, and the amount of metal required is greatly economized, and

the nipple shortened, since the wrench hold or skirt now employed upon the inner end of the nipple is eliminated.

It might also be said that in the well known form of nipple having a slot for screw driver in the head, it is impossible to obtain sufficient pressure or hold from the sides of the slot or kerf, as the pressure in tightening or trueing up the wheel will tear or break out the slot.

The improved nipple can be used in the hub or rim to greater advantage than the present forms, since when a heavy strain or load is put on the slotted nipple head the sides of the slot will fold together, so that the head can be pulled through the rim or hub, but with the improved construction this cannot occur, and the head will bemuch strengthened.

Also with the improved spoke nipple, the wheels can be trued much faster, since there will be no interference between the spokes, and the heads are more accessible for the use ofthe wrench or friction nipple tightener.

Further with the present forms of the nipplesfthe body must be made much longer to pass the spoke crossings, so the operator can apply his wrench to the squared body portions, thus wasting both material and the time employed in finishing the same.

I obtain these advantages bymeans of the forms of construction and arrangementof parts hereinafter described,illustrated in" the accompanying drawings, and specifically pointed out; in the clai In the accompanying drawings, Fig. 1 is a vertical section showing the cold forged blank, and shortened nipple with a squared head produced thereby, also showing the cen ter produced in the head at the time of forgmg. s

Fig.2 is a similar section of the finished pp Fig. 3 is a plan of Fig; 2,

Fig. 4 is a side. elevation of the finished nipple,

Fig. 5 is' a vertical section of the forged blank showing a squared recessin lieu of an external square,

, Fig. 6 is a similar {View of the finished p Fig. 7 is a plan of Fig.6, and

Fig. 8 is an elevation thereof,

Fig. 9 is a plan showing a triangular recess in the head, and s Fig. 10 shows a head,

Fig. 11 is a transverse section. of a drop base tire rim showing the manner of use of the nipple, Fig. 12 is a similar section ofa hexagonal recess in the p Y hub,

Fig. 13 is a vertical section illustrating the use of forming dies.

In these views, in Fig. 1, A is the cylindrical body of the blank before the central opening is formed therein.

B is a laterally extended and outwardly y bearing curved annular shoulder having outwardly curved sides formin a bearing surface, and,

C is a uared hea projecting beyond the or engagement with a wrench or nipple tightener and provided with the center point D which is formed-by the die, at

' the same timethat the other parts are formed.

In Figs. 2, .3, and 4, the central opening E has been'bored through the blank, and procentrally screw threade body, having a vided with screw threads in the usual.

manner.

In Fig. 5 the head portion C is constructed of larger diameter, and a square recess G is formed therein for engagement with a square headed tool.

In Figs. 6, 7, and 8 the central opening has been bored therethrough and screw threaded.

In Fig. 9 the opening H is triangular and in Fig. 10 ishexagonal at 1.

- InFig. 11, J is the dro base rim, and K, K, are the spaced hollow osses in which the ni plis A are I sIeated. d ig. 13 vis the r forming ie an O thelower forming di j lhe parting line is in the periphery of the laterally extended bearing portion of the head.

Having described the invention what" I claim-as new and desire to secure by Letters.

Patent is-- I In anipple for a wire s oke, a cylindrical polygonal wrench engaging r'heansat one end thereof and having an annularly and lateral- 1y extended seating portion provided with a spherical" convex bearing surface, said seating portion being intenaediate of said body and wrench engaging means.

In testimony whereof I hereunto afiix signature.

EDWARD W. STOLER. 

